By sahel any coast belt may be indicated, but the name has become the definite designation of certain districts, e.g.
East of the Buttauf extends the basaltic plateau called Sahel el Ahma ("the inaccessible plain"), rising 1700 ft.
It is situated on the west side of a bay of the Mediterranean, to which it gives its name, in 36° 47' N., 3° 4' E., and is built on the slopes of the Sahel, a chain of hills parallel to the coast.
To the Pliocene period the marine deposits of the Sahel of Algiers and of the Sahel Jijelli must be attributed; also the lacustrine marls and limestone of the basin of Constantine, and the ancient alluviums of the basins and depressions which bear no relation to the existing valleys.
On the west the plateau known as Sahel el-Ahma terminates in precipices 1700 ft.
SAHEL (Arabic for "shore"); a common place-name in countries where Arabic is the dominant language.
Sahel thus understood comprises regions which form the inter mediate zone between the fertile lands of the Sudan and the desert.
Eastward the country falls to the level of the Ghor by a succession of steps, among which the lava-covered Sahel el-Ahma may be mentioned, which lies west of the cliffs overhanging the Sea of Galilee.
Then came the continuation of the line from Hamman-el-Enf to Hammamet and along the Sahel to Susa (93 m.), and the building of a line from Susa to Kairwan, 31 m.
South of the Jurjura and separated from it by the valley of the Sahel, is the Biban range with a famous double pass of the same name, through which alone access is gained to the highlands beyond.